Understanding Decimal Addition
Decimal numbers are just like whole numbers, but with a special dot!
When adding decimals, the most important rule is to line up the decimal points. This keeps all the place values in the correct columns - tenths under tenths, hundredths under hundredths, and so on.
Steps to Add Decimals
1️⃣ Line up the decimals - Write one number above the other with decimal points directly under each other
2️⃣ Add zeros if needed - This helps all numbers have the same number of decimal places
3️⃣ Add just like whole numbers - Start from the rightmost digit and work left
4️⃣ Bring down the decimal point - Keep it in the same column in your answer
Let's Practice Together!
3 tenths
+ 5 tenths
= ? tenths
0.3
+ 0.5
= ?
Interactive Example
Try adding these decimals: 2.45 + 1.3
Parent Tips 🌟
- Use money as a real-world example - Practice adding dollar amounts ($1.25 + $0.75) to make it practical
- Create decimal flashcards - Write decimal problems on index cards and time how many your child can solve correctly in one minute
- Play grocery store - Give items decimal prices and have your child add up the "total bill"